National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 4

Mr Wadhera thought that his garden dried out most quickly when it was hot and windy. He decided to investigate. He watered his dry garden on four different mornings for 10 min at 8 am using the same amount of water.
What should be the weather conditions for four subsequent days to get a fair test?


A (i), (ii), (v) and (vi) only
B (i), (ii), (iii) and (iv) only
C (iii), (iv), (v) and (vi) only
D (i), (iii), (v) and (vi) only


explain

Ans 1:

Class : Class 4
I don't understand the guestion. Can somebody explain.

Ans 2:

Class : Class 4
C

Ans 3:

Class : Class 3

Ans 4:

Class : Class 4
So, for an experiment you need multiple values for comparison. This question states that the experiment is to be carried out for four days, meaning that you need to compare four different scenarios. The first one is obviously hot and windy. The four scenarios- hot, windy, calm and cloudy must be paired with each other forming these- hot and windy, hot and calm, windy and cloudy, cloudy and calm- option B

Ans 5:

Class : Class 5
dude i asked you to explain .Not give the answers because you have done it before.[i am talking to you only, Shaurya uniyal]

Ans 6:

Class : Class 8

Ans 7:

Class : Class 4

Ans 8:

Class : Class 5

Ans 9:

Class : Class 4
The meaning of the symbols is not clear.

Ans 10:

Class : Class 5
Please somebody explain.

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
Hey ! I wrote B only ! They changed my answer !

Ans 2:

Class : Class 5

Ans 3: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :NSO    Class : Class 5

A ship is made of iron but still it floats in water. This is because of its shape. A ship is hollow in the middle. When it is in water, the entire volume of the ship, including the hollow portion displaces water to make space for itself. The volume of water displaced is much more than the volume of iron in the ship. Therefore, the ship floats in water.
In the above passage, the floatation of ship is being described with ______ principle.

A Newton's
B Archimedes'
C G auss'
D Both A and B


Ans 1:

Class : Class 6
B is the answer

Ans 2:

Class : Class 6
B is the answer

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
i

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 6
The correct answer is C.

Ans 2:

Class : Class 3
c c c c c c c c c c c c c c c c c c c c c

Ans 3:

Class : Class 5
ANS:C As the sunset in the west the shadow will fall in the east side. so the park would have most shade is Park R

Ans 4:

Class : Class 1
C

Ans 5:

Class : Class 3
C is the right answer

Ans 6:

Class : Class 3
D

Ans 7:

Class : Class 3
i Do Not KNOW North South East West

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
B

Ans 2:

Class : Class 7
d

Ans 3:

Class : Class 7
OPTION B IS RIGHT

Ans 4:

Class : Class 8
OPTION D) IS CORRECT AS WATER IS INEXHAUSTIBLE,FOREST IS EXHAUSTIBLE,METAL IS RECYCLABLE. AND FOSSIL FUEL CANNOT BE RECYCLED AND IT TAKES MILLIONS OF YEARS TO FORM

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Subject :NSO    Class : Class 8

Consider the given statements and select the correct option which correctly identifies true (T) and false (F).
(i) When a body is in steady motion on a surface, the force of friction is dynamic friction.
(ii) The force of friction between two bodies always acts parallel to the surface in contact with each other.
(iii) It is easier to push a lawn roller than to pull.
(iv) Limiting friction is greater than sliding friction.

(i) (ii) (iii) (iv)
A T F T F
B F T F T
C T T T F
D T T F T


Ans 1:

Class : Class 9
B

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